Yii PHP Framework Version 2 =========================== Thank you for choosing Yii 2 - a modern PHP framework designed for professional Web development. Yii 2 is a complete rewrite of its previous version Yii 1.1 which is one of the most popular PHP frameworks. Yii 2 inherits the main spirit behind Yii for being simple, fast and highly extensible. Yii 2 requires PHP 5.4 and embraces best practices and protocols found in modern Web application development. **Yii 2 is not ready for production use yet.** We may make significant changes without prior notices. We expect to make the first stable release of Yii 2 in early 2014. If you mainly want to learn Yii with no real project development requirement, we highly recommend you start with Yii 2 as it will be our main focus for the next few years. If you have a real project with tight schedule, you should stick to [Yii 1.1](https://github.com/yiisoft/yii) which is the latest stable release of Yii. [](https://packagist.org/packages/yiisoft/yii2) [](https://packagist.org/packages/yiisoft/yii2) [](http://travis-ci.org/yiisoft/yii2) [](https://www.versioneye.com/php/yiisoft:yii2/dev-master) DIRECTORY STRUCTURE ------------------- apps/ ready-to-use application templates advanced/ a template suitable for building sophisticated Web applications basic/ a template suitable for building simple Web applications benchmark/ an application demonstrating the performance of Yii build/ internally used build tools docs/ documentation extensions/ extensions framework/ core framework code tests/ tests of the core framework code REQUIREMENTS ------------ The minimum requirement by Yii is that your Web server supports PHP 5.4. DOCUMENTATION ------------- A draft of the [Definitive Guide](docs/guide/index.md) is available. For 1.1 users, you may refer to [Upgrading from Yii 1.1](docs/guide/upgrade-from-v1.md) to have a general idea of what has changed in 2.0. HOW TO PARTICIPATE ------------------ **Your participation to Yii 2 development is very welcome!** You may participate in the following ways: * [Report issues](https://github.com/yiisoft/yii2/issues) * [Give us feedback or start a design discussion](http://www.yiiframework.com/forum/index.php/forum/42-design-discussions-for-yii-20/) * Fix issues, develop features, write/polish documentation - Before you start, please adopt an existing issue (labelled with "ready for adoption") or start a new one to avoid duplicated efforts. - Please submit a merge request after you finish development.